Exposure,Loss, and Support Predicting the Dimensions of Posttsunami Trauma

This study examined whether exposure, resource loss, and social support predicted the posttsunami trauma of PTSD, depression, negative affect, and physical health problems of the 2004 tsunami survivors. Four hundred sixteen survivors were interviewed in Tamil Nadu (India) 14 months posttsunami. Loss of life followed by loss of property and disaster exposure positively predicted the dimensions of trauma. Survivors having lower social status and income received less material and informational support than their equally affected counterparts, which furthered stress and distress. The survivors’ trauma can be arrested, minimizing the exposure and tangible resource loss, and improving the delivery of social support.     

The assessment of knowledge and learning in competence spaces: The gain–loss model for dependent skills

The gain–loss model (GaLoM) is a formal model for assessing knowledge and learning. In its original formulation, the GaLoM assumes independence among the skills. Such an assumption is not reasonable in several domains, in which some preliminary knowledge is the foundation for other knowledge. This paper presents an extension of the GaLoM to the case in which the skills are not independent, and the dependence relation among them is described by a well‐graded competence space. The probability of mastering skill s at the pretest is conditional on the presence of all skills on which s depends. The probabilities of gaining or losing skill s when moving from pretest to posttest are conditional on the mastery of s at the pretest, and on the presence at the posttest of all skills on which s depends. Two formulations of the model are presented, in which the learning path is allowed to change from pretest to posttest or not. A simulation study shows that models based on the true competence space obtain a better fit than models based on false competence spaces, and are also characterized by a higher assessment accuracy. An empirical application shows that models based on pedagogically sound assumptions about the dependencies among the skills obtain a better fit than models assuming independence among the skills.     

The caregiving relationship under stress: foster carers’ experience of loss of the sense of self

This paper is an account of a piece of research which involved interviewing six foster carers who had ended a placement with a child under the age of five with an early experience of abuse and neglect. The paper describes one of the themes that emerged from the data analysis, the loss of the sense of self in the foster carers, and argues that the experience of attempting to provide care for these children led to internal shifts in the carers that reverberated throughout the network around the child. The paper suggests that knowing about the external reasons for placement breakdown is not enough without taking into account the impact on the internal world of the foster carers and the emotional impact of attempting to provide care for a child who has experienced abuse and neglect.     

Understanding the ‘blind spot’ when children move from foster care into adoption‡

Current social work practice in the UK dictates that when children move from foster care into adoption, the transition takes place within 7 and 14 days, and usually there is no contact between the child and their former carer for several months after the move, if at all. Very little attention or research has been aimed at understanding the rationale for these procedures, or their impact on the children. Joining forces with social work colleagues in a Looked After Children’s team, two child psychotherapists carried out a piece of qualitative research to look at these moves in more detail, and try to tease out how and why these key decisions are made. Analysing data from interviews with foster carers, adopters and social workers, the researchers found that the emotional experience of the child, particularly their experience of losing their foster carer, loses centre stage in people’s minds during this transition, leading to what is described as a ‘blind spot’ across the network. A significant reason for this emerged, in that the children tended to be very compliant both during and after the move and lacking in any obvious distress at losing their former carers, despite having previously been described as passionately attached to them. The research showed that adults across the network, all struggling with intense anxieties of their own, tended to interpret this as evidence that the children were ‘fine’ rather than questioning what might be going on at a deeper level. These research findings are explored in the light of a knowledge base accumulated from a working understanding of attachment and loss in early childhood, and of the psychoanalytical phenomena of individual and organisational defences against loss. Implications for future practice are suggested.     

Parents’ adjustment following the death of their child: Resilience is multidimensional and differs across outcomes examined

We examine whether the previously reported commonness of resilience to significant adversity extends to parents’ death of a child. To examine our research questions, we apply growth mixture models to longitudinal data from 461 parents in the HILDA study who had experienced child loss. The proportion of parents manifesting resilience were 44%, 56%, 21%, 32%, and 16% for life satisfaction, negative affect, positive affect, general health, and physical functioning, respectively. Only 5% were resilient across all five indices, whereas 28% did not show a resilient trajectory across all outcomes. Social connectedness, anticipating comfort when distressed, and everyday role functioning were the strongest predictors of resilient adaptation. Findings underscore that resilience is not a unidimensional construct.Words: 115.     

关于成本沉没效应的实验研究

运用IAT 技术,通过实验,证明“损失厌恶”具有内隐性,“损失厌恶”存在内隐偏差,并且二者具有很强的稳定性,即不受当前情绪及刺激材料性质等的影响,为进一步认识成本沉没效应等现象的本质特点提供了证据。     

Collective Action Meets Prospect Theory: An Application to Coalition Building in Chile, 1973–75

Expected utility theory explains collective action as an attempt by individuals to maximize their gains. In contrast, my application of prospect theory to collective action suggests that people are motivated to participate in collective action by a fear of loss. These alternative rationalities are considered in the context of the successful cooperative effort of four economic groups in Chile during 1973–75, the first years of the Pinochet military regime. In this case, the logic of prospect theory better captures how actors made decisions about whether or not to engage in collective action. Of the four groups that did join the 1973–75 economic coalition, only one (the mineowners) appears to have maximized its net asset level, as expected utility theory predicts. All four groups seem to have been motivated to cooperate because they found themselves in the domain of losses and expected that cooperation with other, even rival, economic groups might help them recoup their recent losses.     

One night of sleep deprivation affects reaction time, but not interference or facilitation in a Stroop task

The Stroop color-naming task is one of the most widely studied tasks involving the inhibition of a prepotent response, regarded as an executive function. Several studies have examined performance on versions of the Stroop task under conditions of acute sleep deprivation. Though these studies revealed effects on Stroop performance, the results often do not differentiate between general effects of sleep deprivation on performance and effects specifically on interference in the Stroop task. To examine the effect of prolonged wakefulness on performance on the Stroop task, we studied participants in a 40-h "constant routine" protocol during which they remained awake in constant conditions and performed a Stroop color-naming task every two hours. We found that reaction time was slowest when the color and word did not match (incongruent), fastest when the color and word did match (congruent), and intermediate when participants named the color of the non-word stimulus (neutral). Performance on all three trial types degraded significantly as a function of time awake. Extended wakefulness did not significantly change the additional time needed to respond when the color and word did not match (Stroop interference), nor did it change the amount of facilitation when color and word matched. These results indicate that one night of sleep deprivation influences performance on the Stroop task by an overall increase in response time, but does not appear to impact the underlying processes of interference or facilitation. The results suggest that the degree to which an "executive function" is affected by sleep deprivation may depend on the particular executive function studied and the degree to which it is subserved by the prefrontal cortex.     

How beliefs influence the relative magnitude of pleasure and pain

Loss aversion is an economic assumption about utility—people value giving up a good more than they value getting it. It also has hedonic meaning—the pain of a loss is greater in magnitude than the pleasure of a comparable gain. But value and pleasure are not necessarily identical. We test the hedonic interpretation of loss aversion in experimental markets. With hedonic forecasts, sellers imagine the pain of losing their endowment, and buyers imagine the pleasure of being endowed. With hedonic experiences, sellers rate the pleasure of having the endowment, and buyers rate the pain of being without it. Contrary to loss aversion, predicted pleasure is greater in magnitude than predicted pain, and experienced pleasure surpasses experienced pain. We show that the relative magnitude of pleasure and pain depends on beliefs about the likelihood of outcomes, as well as utilities. Surprise makes gains more pleasurable and losses more painful. With surprising gains and expected losses, pleasure can surpass pain. But when gains and losses are equally likely (or losses are surprising and gains are expected), the opposite pattern can occur. Finally, within‐group and between‐group prices are significantly correlated with hedonic experiences. Sellers who feel better with their endowments assign higher selling prices, and buyers who feel worse about the absence of endowment assign higher buying prices. Despite the fact that hedonic experiences deviate from loss aversion, these emotions predict the endowment effect. Copyright © 2009 John Wiley & Sons, Ltd.